CI: Update final file to use hashes.

[zssherman]

PR tags (required)

Select all that apply.

• docs-only
• tests-only
• tiny-change (<5 lines, single class/file)
• code-change
• scientific/algorithmic
• design/architecture
• GUI

What changed

2-4 bullets in plain language.

Why

1-2 lines on the user/problem impact.

Issues closed

List issue references this PR closes (for example: Closes #123, Fixes #456).

Target version (required)

Aiming for: vX.Y.Z / next patch / unreleased

Validation

Mark each item as done or N/A. Add one short evidence line for each item.

• I ran ruff

  • Evidence (command + pass/fail):
  • N/A reason (if not run):

• I ran import-linter

  • Evidence (command + pass/fail):
  • N/A reason (if not run):

• I ran tests

  • Evidence (command + pass/fail):
  • N/A reason (if not run):

AI usage & manual verification

If AI tools were used, complete this section.

• AI used: yes/no
• Model/tooling:
• Tasks delegated to AI:
• Manual verification performed:

Reviewer guide

Where should review start, and what are the key files/areas?

• Entry point:
• Key files/areas (1-3):
• Expected review time:

Impact note (optional): breaking behavior, scientific output shift, or user-visible behavior.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.62%. Comparing base (4d927cb) to head (00848df).

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #87   +/-   ##
=======================================
  Coverage   89.62%   89.62%           
=======================================
  Files         113      113           
  Lines        6575     6575           
  Branches      827      827           
=======================================
  Hits         5893     5893           
  Misses        476      476           
  Partials      206      206           

Flag	Coverage Δ
unittests	89.56% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.